JPH09203761A - Wiring line probe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable probing without the possibility of radio interference by providing signal generators, each having a switch means capable of arbitrarily selecting plural probe signals, and a receiver having a switch means capable of arbitrarily selecting input signals. SOLUTION: This wiring line probe comprises signal generators 3-1 to 3-(n), each having a switch means 9 capable of selecting either of plural probe signals, and a receiver 5 having a switch means 10 capable of arbitrarily selecting input signals in order to receive a specific one of the plural probe signals. The receiver 5 has a built-in filter to detect only the same frequency as the signal frequency Fn of the signal generator 3-(n), and is provided with a selecting switch 10 capable of arbitrarily selecting the frequencies received. To probe the course of a wiring line or the position of a circuit breaker, the switch 10 is changed over during probing, so that the circuit breaker or the wiring course corresponding to the signal generator 3-(n) can be probed. In addition, efficient probing is made possible by providing the receivers 5 by plural numbers and performing probing by plural persons.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring path searching device for searching a wiring path of a wiring path, a position of various devices connected to the wiring path, and a position of a power source.

[0002]

2. Description of the Related Art A conventional wire channel probe is composed of a signal generator that generates one type of probe signal and a receiver that responds and displays only when the probe signal is detected. , Connect to the circuit to be explored. Since the signal generator uses the current flowing through the signal generator as an exploration signal, the load current flowing through the signal generator is intermittently and frequently passed to generate a high-frequency current in order to distinguish it from the commercial frequencies of 50 Hz and 60 Hz. When this high-frequency current flows in the wiring path, a magnetic flux is generated around the electric wire according to the high-frequency current.

The receiver includes a coil for detecting the magnetic flux generated by the signal generator, a filter for detecting only the frequency component of the high frequency current flowing in the signal generator, an amplifier for amplifying the signal, and the magnitude of the detected signal. It is composed of a display device that lights according to the degree, after connecting the signal generator to the wiring path to be searched, by bringing the receiver close to the wiring path or various devices connected to the wiring path, the wiring path, The position of various devices connected to the wiring path, the power supply of the wiring path, and the like can be searched.

[0004]

In the prior art, a signal generator that generates one type of search signal and a receiver that responds only when the search signal is detected and displays the same are used. Using multiple signal generators in
At the same time, when the circuit search was attempted, there was a problem that the search signals of the transmitters were the same and there was interference, making it indistinguishable.

This means that it is not possible to complete the work in a short period of time even if manpower is applied, and in the case of conducting an exploration by a single person, it is not possible to connect a plurality of signal generators at a time, so that it is possible to connect between remote locations. When conducting a search for a wiring path, there is an inconvenience such as that it is necessary to change the connection of the signal generator and return to after each search.

The problem to be solved by the present invention is that when a plurality of people simultaneously search in the same wiring system, the wiring can be searched without interference and the number of times of changing the signal generator connection can be reduced. To provide a container.

[0007]

In order to solve the above-mentioned problems, a wiring path exploring device of the present invention includes a signal generator having a switching means capable of arbitrarily selecting a plurality of exploring signals, and a plurality of the exploring signals. It comprises a receiver having switching means for arbitrarily selecting a received signal for receiving a specific signal therein.

The probe signal of the signal generator may be a current flowing through the signal generator.

Further, the wiring path exploring device of the present invention includes a signal generator having a switching means capable of arbitrarily selecting a plurality of exploring signals, and automatically selecting and receiving a specific signal from the plurality of exploring signals. It may consist of a receiver with possible tuning means.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 3 are basic principle diagrams of a wiring path exploring device according to the present invention, in which the position of a breaker 1 connected to an outlet 2 or a wiring path from the outlet 2 to the breaker 1 is searched. , Connect the signal generator 3 to the outlet 2.

The signal generator 3 operates as a load,
In this case, as shown in FIG. 2, the signal current is different from the commercial frequency current by causing the load current to flow intermittently and with high frequency. Since this signal current is supplied from the transformer on the power supply side, this signal current will flow from the power transformer to the signal generator. At this time, a magnetic flux 7 due to the signal current is generated around the wiring path 4 as shown in FIG.

The receiver 5 is provided with a coil 6 for detecting the magnetic flux 7. When the coil 5 is brought close to the wiring path 4 or the breaker 1, a voltage is induced across the coil 6 by the action of the magnetic flux 7. Since the receiver 5 is configured to react only to the frequency of the signal current, it does not react even if a current of commercial frequency flows, for example. As a result, it is possible to search the wiring path 4 to which the signal generator 3 is connected in the hot line state.

FIG. 4 shows the principle of the present invention. The signal generator 3 is provided with a signal current frequency selection switch 10. For example, the signal generator 3-1 has a frequency F1 and the signal generator 3-2 has a frequency F2. , The signal generator 3-n is set to the frequency Fn,
Connect to each exploration section.

The receiver 5 has a built-in filter for detecting only the same frequency as the signal frequencies F1, F2 and Fn of the signal generator, and further has a selection switch 10 for arbitrarily selecting the reception frequency. When conducting the route search of the wiring path or the position of the breaker, by switching this switch at the time of search, the signal generators 3-1, 3-2, 3-
The breaker or wiring route corresponding to n can be searched in a short time. In addition, if a plurality of receivers are prepared as needed and a plurality of people perform the search, more efficient search can be performed.

[0015]

FIG. 5 shows an embodiment of a receiver according to the present invention, and FIG. 6 shows an embodiment of a signal generator according to the present invention.

In FIG. 5, 6 is a coil for detecting the magnetic flux generated by the current flowing in the wiring path, and 21 is the coil 6.
An amplifier circuit for amplifying the voltage induced in the
-1 to 22-n are filters for extracting only signal components synchronized with the signal frequency of the signal generator. 10 is a selection switch for selecting the signals of the filters 22-1 to 22-n and transmitting them to the subsequent amplification circuit, 23 is an amplification circuit for amplifying the signals to proper signals, 24 is a buzzer for notifying that a target signal has been received, 25 LED according to the signal level of the amplifier circuit 23
Is a display circuit (driver), and 26 is an LED (display) for notifying that a signal level has been received.

In the present embodiment, the signal switching means is the selection switch 10, but instead of the selection switch 10, it can be automatically synchronized with the corresponding frequency.

In FIG. 6, reference numeral 30 is a diode bridge for converting alternating current into direct current, 31 is a constant voltage circuit for supplying a constant voltage without being affected by the power supply voltage, 32 is an oscillation circuit, and 33 is a circuit.
Is a frequency dividing circuit that divides the output of the oscillation circuit 32 to generate a plurality of signal frequencies, 9 is a selector switch that selects the output of the frequency dividing circuit and sends the signal to the control circuit 34 in the subsequent stage, and 34 is a transistor 35. A control circuit (driving circuit) for driving, 35 is a transistor for turning on / off a load current as a signal current, and 36 is a load resistor for adjusting the magnitude of the load current.

When the signal generator is connected to the wiring path, the oscillating circuit operates and the frequency dividing circuit produces a plurality of frequencies. By setting the signal frequency change-over switch 9 to an arbitrary position, the output transistor 35 performs an on / off operation at the frequency selected by the change-over switch 9, and turns the load current on or off. This frequency is different from 50 or 60 Hz in order to distinguish it from the commercial frequency.
Since this load current is supplied from the power supply of the connection wiring path,
This current becomes the signal current.

In the present embodiment, the oscillator circuit and the frequency divider circuit are combined, but a plurality of oscillator circuits may be provided.

[0021]

As described above, the present invention has the following effects.

(1) A signal generator having a changeover switch capable of arbitrarily selecting a plurality of search signals, and a selectable selection of a received signal for receiving a specific signal among the plurality of search signals. Since a receiver with a switch is provided, only one search signal could be generated in the past.
When a plurality of people simultaneously search on the same wiring system, by setting the search signals at different frequencies, the search can be performed without interference.

(2) In the case of searching by one person, the number of times the signal generator connection is changed can be reduced by setting the search signals of the plurality of signal generators to different frequencies.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a basic principle of a wiring path exploration device of the present invention.

FIG. 2 is a waveform diagram of a search signal of the wiring path search device of the present invention.

FIG. 3 is an explanatory diagram of magnetic flux generated by a signal current.

FIG. 4 is a system diagram showing the principle of the present invention.

FIG. 5 is a circuit diagram showing an embodiment of a receiver according to the present invention.

FIG. 6 is a circuit diagram showing an embodiment of a signal generator according to the present invention.

[Explanation of symbols]

1 breaker, 2 outlets, 3,3-1 to 3-n
Signal generator, 4 wiring path, 5 receiver, 6 detection coil, 7 magnetic flux, 9 changeover switch, 10 selection switch, 21 amplification circuit, 222-1 to 22-n filter,
23 amplifier circuit, 24 buzzer, 25 display circuit (driver), 26 LED (display), 30 diode bridge, 31 constant voltage circuit, 32 oscillator circuit, 33 frequency divider circuit, 34 control circuit (drive circuit), 35 transistor, 36 Load resistance

Claims (3)

[Claims] 1. A signal generator having a switching means capable of arbitrarily selecting a plurality of search signals, and a switching means capable of arbitrarily selecting a reception signal for receiving a specific signal among the plurality of search signals. Tracker comprising a receiver having a. 2. The wireway probe according to claim 1, wherein the probe signal of the signal generator is a current flowing through the signal generator. 3. A signal generator having a switching means capable of arbitrarily selecting a plurality of search signals and a receiver having a tuning means capable of automatically selecting and receiving a specific signal among the plurality of search signals. Wiring path probe.